Keep or sell I think the decision is yours, bro, especially since you've done some research and heard a lot of rumors that Ethereum will be discarded in the event of a merger.
But logically I think that Ethereum will not disappear in the crypto market, so if you don't want to take the risk, I can only suggest that you sell some of it and keep some of it, who knows what you save is a 5x profit of your first investment, bro. .